Import a GIMP XCF on Windows 7
There is an "import GIMP" addon currently available, but it doesn't look like it's very stable at this point. You can activate it under User Preferences > Addons > Import GIMP to scene. Use key search word GIMP to locate it. Then it just a matter of opening the import menu, selecting xcf and importing the file. like I said though, it's kinda unstable, wait for more hardy versions to come out if you can.